What does the term "porosity" refer to in hair care?

Porosity in hair care specifically refers to the hair's ability to absorb moisture, which is a critical factor in maintaining healthy hair. This characteristic indicates how well the hair can retain moisture from products, humidity, and water, which can greatly affect the overall health and appearance of the hair.

When hair is described as having high porosity, it means that the cuticles are raised or damaged, allowing moisture to be absorbed quickly but also lost quickly, making it more prone to dryness. On the other hand, low porosity hair has a tightly sealed cuticle that repels moisture, requiring heat or certain techniques to assist with absorption. Understanding porosity helps hairstylists and individuals choose the right products and treatment methods tailored to the specific needs of the hair type. This knowledge is important for achieving optimal hydration and managing different hair textures effectively.